X5 Wrecked - got some questions

[X5Dawg]

Wife was on the expressway today and was rear-ended when she slowed down for traffic that was caused by another accident that had just occurred. She is fine - most important thing. Lower part of rear hatch is dented along with rear bumper. Both tail pipes were crushed like soda cans. Hitch was bent down. Tail light was broke.

Ok, first question - once the accident occurred, we were unable to get the X to start. Is this a safety feature activated by the accident or could it have something to do with the tail pipes being CLOSED?? To me it seemed to be a safety thing because it would not even try to crank - everything powered up, but the ignition would not turn over.

Second question. I am thinking about making an opportunity out of this misfortune. Since it is apparent that the mufflers are going to have to be replaced, does anyone know the price difference in the 4.4 muffler vs. the 3.0?? I am thinking that I might go ahead and pay the difference and have the better sounding mufflers put on. Or should I go with a different setup??

Probably going to go ahead and have the sport tail lights (or at least one) put in by the insurance company and then I will spring for the other.

Thanks for any input!!